Specialty or High-purity Gases

What are specialty or high-purity gases?

We produce and supply specialty gases, which are extensively used in laboratory analysis and industrial applications. Specialty or high-purity gases (mixtures) are products that have met all the requirements of component purity and impurity content, are manufactured as per specific technology, and are used in tiny amounts for scientific, technological and analytical (metrological) purposes. Also, they satisfy most requirements related to diffusive resistance, hermiticity and reactivity. High-purity gases manufactured by top-notch companies include high-purity calibration gas mixtures, liquid gases, cylinder gases, mixtures for medical tools sterilisation and laser mixtures. We select a suitable specialty gas, proper gas packaging and delivery system, and optimise the process with our high-purity gas specialists to review the operations and deliver products manufactured and approved by qualified laboratory technicians who use advanced analytical technology to meet the customer specifications. High-purity gases include argon, air, carbon dioxide, helium, hydrogen, oxygen, nitrogen, hydrocarbons, rare gases, customised gas mixtures and EPA protocol gases.

Where are high-purity gases used?

We manufacture and package our high-quality gases by checking raw material quality with analytical methods such as atomic emission spectrometry, chromatography atomic absorption and more. We ecologically monitor the highly toxic and explosive substances in the atmosphere while maintaining an inert, protective and reducing atmosphere. They further aid in the production of UHP gases. Manufacturing companies also work with high-purity gases, which help research, laser technology, clinical diagnosis and chemical synthesis. High-purity gases are commonly used in analytical activities as they provide reliable and consistent results. They work with the lowest level of impurities available, and general applications consist of the calibration of research, material testing and instrument. High-purity nitrogen is popularly used in casting heat treatment, food packaging, secondary steel refining, lamp industries and optical fibres. High-purity hydrogen and helium are used in gas chromatographs, while high-purity argon is used as the carrier gas for microelectronics and gas chromatographs.

We offer a complete range of specialty high-purity gases!

As we have worked with gases for multiple decades, we know that each gas comes with a purpose. From argon to xenon, we offer all kinds of pure gases: noble gases (helium, krypton, neon, and xenon), air gases (argon, nitrogen, and oxygen), hydrogen, carbon dioxide, hydrocarbons, and carbon monoxide. We also have inorganic gases (ammonia, sulphur dioxide, and chlorine) and organic gases (acetylene, ethylene, ethane, propane, propylene, butane, hexane, and methane). Our products are manufactured and packaged while adhering to stringent product quality standards. We use advanced analytical equipment that complies with global regulations, is managed by qualified and experienced laboratory technicians, and carefully sourced raw materials. In addition, we have provided the proper training to our sales team, so that they understand your requirement, suggest the correct products and packaging to ensure industry specifications and customer expectations.

You can trust our products!

We manufacture our products with the utmost consideration for stringent quality standards, starting from the raw materials, production stages, and compliance with government regulations. Our company follows all quality guidelines as set by the highest authority of India and adhere to the control measurements and individual cylinder analysis, which determines the gas quality requirement. In addition, we use several applications, specifications, and instruments to measure gas purity and removing impurities. We have different grading systems to measure UHP gas purity. Our products are available across all shapes and sizes, right from bulk supply down to tiny cylinders. We understand that different companies have specific sets of requirements, which is why we’re happy to take customized orders. Our experts would be happy to select the right product, package, and deliver high-purity gases for your requirements. All you have to do is to book an appointment with us. So, check out our entire portfolio at Alchemie Gases & Chemicals to learn more about our ultra-pure gases, ready to be delivered at your service.

Gas Mixtures

1% Accuracy Gases

Reactive Single Component

Reactive Multigas Component

Non-Reactive Multigas Component

We handle over 100 different types of gases and liquid chemicals to produce 5000 varieties of Gas / Liquid mixtures to serve the ever increasing need of Industries and Institutions. The gas mixtures are made to any concentration within the permissible limits of Physics and Chemistry. This is non-explosive, non-reactive, stable mixture of gases in wide range of packaging. All Specialty Gases are custom-mixed and analyzed, and then properly labeled in facilities. We manufacture our calibration gas mixtures with state-of-the-art and advanced gravimetric scales, tools, and instruments. There are several cylinder sizes in place to fulfill your specific gas requirements, which can be viewed on the cylinder specification page and mixture component page. Our business always provides and markets high-quality specialty gases, and equipment by directly delivering them to the customers or distribution partners. We are constantly guided by our belief that only top-notch products are offered to the clients. We also emphasize that our impeccable customer service takes the stage to provide profitable growth in the competitive gas industry

STABILITY

This is the time period for which the concentration of the components does not change and remain stable within certification accuracy irrespective of cylinder pressure and temperature. The certificate contains information on minimum pressure and temperature range needed for use of the mixture before the concentration may deviate from certified accuracy.

QUALITY ASSURANCE & TRACEBILITY

In order to supply calibration gas mixtures in accordance with specifications agreed upon with our customers, UPG has an efficient quality assurance system. All stages of production process, from receipt of order to dispatch, are subjected to strict quality assurance requirements.

NIST Traceable Standards

Sandesh gases Pvt Ltd. offers several calibration gas standards for automotive industries to meet the accuracy level. Calibration of instruments is done by NABL accredited labs. Our production facility conforms to a strict set of quality-assurance measures and standard operating procedures. Our lab has been certified and documented to be compliant with ISO/ IEC 17025 requirements.

Ripening gas

Fruit ripening is a biological process in which ethylene gas is generated by the fruits which in turn also acts in causing further acceleration of the ripening process. Thus one can start and trigger the process of ripening of fruits by introducing ethylene in some form. It is also known that the ripening can be started by introducing acetylene; acetylene is generated by keeping small quantities of calcium carbide particles or dust. This carbide while coming into contact with moist atmospheric air causes generation of acetylene which in turn warms up the atmosphere as well as known to trigger the ripening in fruits. It is suspected that the ripening process is accelerated since acetylene imitates ethylene. Since the amount of carbide needed to ripen the immature fruit is more it makes the fruit become more tasteless and toxic. Also commercially available carbide is known to contain trace amount of arsenic and phosphorous in carbide that can make the healthy fruits poisonous. It is also known that the fruit ripening using calcium carbide is banned by Govt. of India. Ethylene also can be generated from ethanol and other ethylene derivatives. However ethanol is a restricted items as this can be used as and imbibed as an alcohol and thus possession of ethanol can lead to avoidable inquiries and harassment by many govt. and police authorities. Use of ethylene in pure form in small and safe quantities or as safe mixtures of ethylene and nitrogen are the recommended and best methods for ripening of fruits.

For Fruit Ripening

The quantity supplied in sealed cans is safe as long as the seals are not broken. The quantity in each can is adequate to ripen approx. 3 to 4 tonnes of bananas when mixed with air in a sealed chamber

Ethylene in Canister Can:

Why Ethylene? Ethylene is an agent in the fruit ripening process. Most of the fruits elute ethylene gas as they ripen and other is sensitive to it. The process of ripening is triggered and accelerated, if the atmosphere surrounding the raw fruit is injected with trace of ethylene gas. The process of fruit ripening with external ethylene injection does not affect the flavor and taste of the fruit. The concentration of ethylene that is required to be maintained in the atmosphere during the soaking period is decided by the size of the room/chamber and the type of fruit. One canister shall result in a concentration of approx. 100 ppm of ethylene in a room/chamber of size 3M*4M*3M, with a volume of 36cubic meter (36000litrs). How to use: Store the fruit in plastic crates/tray in a gas tight room or a chamber to avoid physical damage to the fruits. Reduce the room temperature to prescribe temperature for the fruit. (15 to 18 Deg. C for bananas). Break the seal of the canister valves and press the canister valve to release the gas into the room/chamber. Empty the canister completely. Care should be taken that the operator is not exposed to gas eluting from the canister. The room should be gas tight and shall have adequate air circulation facility to ensure that the concentration within the room is distrusted and uniform. After the prescribe time (for banana 24 hours). Open the doors of the room for 20minutes. Six hours for the next 24 hours to ventilate the room and remove CO2 from the room. Remove the fruit crates for strong and transport to next stage.

A Guide for Fruit Ripening:

Fruits are ripened with ethylene exposure at certain prescribed Temperature and Relative Humidity level of 90-95%. Following is broad guide for fruit ripening condition.

Parts Available for Specific Requirement of Customer

Specialty gases typically refer to calibration gases, zero gases, carrier gases, span gases, instrumentation gases and bump test gases. They may be either pure gases or gas mixtures containing components at concentrations extending from the per cent range down to part per billion and sometimes even part per trillion.

Gases	Purity%	Gases	Purity%
METHANE	≥99.95%	CARBON DIOXIDE	≥99.995%
METHANE	≥99.995%	CARBON MONIXIDE	≥99.97%
METHANE	≥99.999%	CARBONYL SULPHIDE	≥99.90%
ETHANE	≥99.95%	METHYL MERCAPTAN	≥99.50%
ETHYLENE	≥99.995%	ETHYL MERCAPTAN	≥97.00%
PROPANE	≥99.50%	ETHYL ACETYLENE	≥98.00%
PROPANE	≥99.90%	VINYL ACETYLENE	≥98.00%
ISO-BUTANE	≥99.50%	VINYL CHLORIDE	≥99.97%
ISO-BUTYLENE	≥99.50%	HYDROGEN SULPHIDE	≥99.50%
I-BUTANE	≥99.00%	XENON	≥99.999%
N-BUTANE	≥99.50%	NEON	≥99.999%
1, 2 BUTADIENE	≥98.00%	KRYPTON	≥99.999%
1, 2 BUTADIENE	≥99.50%	SULFUR	≥99.99%
CIS-2 BUTENE	≥99.00%	HCL	≥99.995%
TRANS 2 BUTENE	≥99.00%	ARGON	≥99.9999%
PROPYLENE	≥99.50%	NITROGEN	≥99.9999%
PROPYLENE	≥99.90%	AIR (SYNTHETIC)	≥99.90%
PROPADIENE	≥95.00%	HELIUM	≥99.9999%
CYCLOPROPANE	≥99.00%	HYDROGEN	≥99.9999%
NITRIC OXIDE	≥99.50%	OXYGEN	≥99.999%

Gas Handiling

We also offers a complete range of Gas Handling Equipment that include Cylinders, Regulators (I & II stages, Brass & SS), Manifold Systems, gas cyls Pallets, Gauges, Flow meter, Cylinder Trolley, Valve & Valve Cap & Guard, Cylinder Quad, Aluminium Canister, S.S. Bottle and other safety products supported by a broad range of related services.

Single stage gas pressure regulator	Flexible Hose	Gas purification panel	Gas cylinder trolly
Cylinder Quads	Cascades	Pallets	Banks

How to choose the correct type of regulator for your purpose : Here we would like to explain to our customers about gas pressure regulators. In the process of regulator selection, the application needs to be defined with consideration given not only to the pressure requirements but also to the flow rate, gas/liquid composition, and temperature. Proper selection can help to avoid undesirable conditions such as droop and creep, improper pressure control, and contamination of gas streams. Once the appropriate type of regulator has been identified, based on the application, attention should be given to the materials of construction (MOC). The same regulator may be outfitted with different materials for critical components such as diaphragms and poppet seats, to ensure the safe and proper functioning of the regulator over time. The high-pressure gas regulators are of two types i.e. Single Stage & Two Stages. Single Stage and Double stage Regulator : There are 2 basic Gas Pressure Regulators are available in the market. We request our customers to consider choosing between a single and double-stage industrial gas regulator. It depends on the variation in the inlet pressure supply. The manner in which a regulator adjusts to variations in the high-pressure supply is known as the supply pressure effect (SPE). In short, Single pressure regulators are suitable for most applications where the inlet pressure is relatively constant, whereas the high-pressure supply is subject to large variations, a two-stage regulator with a low SPE will provide the most stable, low-pressure delivery. Piston type Regulator : Piston type Gas Pressure regulators are generally used in applications with outlet pressures higher than 35 bar, although they may also be suitable for lower pressures. The Series 100 regulators from PortaGas are designed to maintain constant flow rates so you get real accurate monitor calibrations even as the cylinder pressure drops.

• Knurled ON/OFF knob for easy grip with or without gloves
• Rotate knob for audible ON/OFF click
• No set screw on the knob, meaning the knob won’t strip out
• Wide diaphragm design for precise flow control even as the cylinder pressure changes
• Finer graduations for precise reading of cylinder contents
• Stainless steel gauge
• All wetted surfaces have proprietary passivated coating to ensure non-reaction with calibration gas
• Wide choice of outlets and inlets available
• Side outlet prevents tubing from kinking

Gas Mixing Panels

BSL Gas Technologies Ltd make a range of standard panels suitable for industrial applications and each of these panels are pre-set to suit the customers’ specific needs prior to despatch. The capacities shown below are approximate, and are dependent on inlet pressure, outlet pressure and gas type. 25m³/h Mixing Panel - BSL Basic Stock Code Number FW1 50m³/h Mixing Panel - BSL Basic Stock Code Number FW2 100m³/h Mixing Panel - BSL Basic Stock Code Number FW3.

System Description The mixing panel is designed to mix two or three gases by means of pre-set gas mixers and supply the resulting mixed gas into a pipeline distribution system. The panel is fitted with 1, 2 or 3 of BSL Gas Technologies patented mixing valves, depending on the capacity. The gas mixers work on a pressure balance principle with an interlock so that both inlet gases must be present for there to be a mixed gas output. Each mixer has been configured internally to suit the particular gas application and mix required from the system and should not be tampered with and or adjusted by non-qualified personnel. Gas mixing valve outlets are manifolded together where necessary to provide the correct gas flow for the panel design.

Inlet Gas Supply As standard, pressure regulators and pressure relief valves are not provided for the gas inlets. It is the responsibility of the customer to provide gases at the correct pressure and to fit pressure relief valves (if required) to ensure that the design pressure is never exceeded. It is important for the correct operation of the equipment that inlet gas supply pressures are at or below the limits specified on the panel data label. However, the pressures of the inlet gases must also be within a specific range relative to each other - an additional label will be attached to the lower right hand side of the panel back plate giving details of the required relationship between all the inlet gases. Mixing panel performance and gas mixture control will be impaired if the instructions on this label are not followed. The gases supplied to the panel must be clean, dry and fully vaporised. Liquid gas may damage the system or cause injury. Gas supply lines to panel must be clean and free of debris. Unless their omission is specially requested by the customer, the mixing panel inlets and individual gas mixing valves are fitted with 300 mesh filters to protect them from dirt ingress caused by making pipe connections to the panel. They are not designed to filter the gas supply itself. If there is any doubt about the cleanliness of the gas then a filter of 5 m or better should be installed in the gas supply line close to the mixing panel. In the case of CO2 it is sometimes necessary to fit a 0.01 m coalescing filter and an activated carbon filter to ensure that any impurities in the gas or plasticizer from hose linings is removed. Liquid CO2 is a powerful solvent and may carry dissolved oil or extract plasticizers from flexible hose linings. Contamination of this sort will affect the gas mix. If Oxygen is used then all gas supplies, upstream and downstream pipework must be of suitable construction and cleaned to Oxygen standards. Mixed Gas Outlet A pressure regulator is optionally fitted to the mixed gas outlet. This is adjustable 0 to 13.8 bar. Please note that panel will only produce the rated capacity with the gases and inlet and outlet pressures specified on the customer’s original order. Pressure relief valves are not fitted in the mixing panel. In the event of component failure the mixed gas pressure could equal the gas supply pressure. If equipment downstream of the mixing panel cannot withstand this pressure then customer must install suitable pressure relief valves.

Panels For Special Applications BSL Gas Technologies Ltd can also offer versions of the FW series panels for special purposes, please contact us with your requirements. One example of this is the FW2 type panel with user adjustable mixture setting. FW1, FW2 and FW3 Panels With User Adjustable Mixture Setting These panel types follow the same basic layout as the standard FW series, but use modified mixing valves that incorporate an end-user accessible adjustment mechanism. To change the gas mixture, insert the key provided in the hole as shown, turn clockwise to increase mix, and counter- clockwise to decrease. The mixture setting is indicated on the scale. BSL Gas Technologies recommend that customers use a gas analyser at the point of use. Replacement keys are available as spare parts from BSL Gas Technologies Ltd.

UHP Oxygen 5N,5.5N

We have installed Oxygen Plant to produce & certify 99.9995% pure Oxygen. SGPL is the only manufacturer in India to produce Oxygen gas up to 5.5 grade purity.

Grade	≥ 99.999%	≥ 99.999%
	5.5	5.0
UHP Oxygen	√ (Available)	√ (Available)

UHP - OXYGEN 5.0 & 5.5 Grade –Purity and Impurity Component

Purtiy	≥ 99.999%	≥ 99.999%
Grade	5.5	5.0
Phase	Gas	Gas
Impurities in PPM
Argon + Nitrogen	≤2.0	≤4.0
Moisture	≤1.0	≤1.0
THC	≤0.1	≤0.1
CO+CO2	≤0.1	≤0.5

Oxygen Ultra Pure

We are having speciality gases range includes a number of UHP (ultra-high purity) oxygen products with specifications intended to deliver peace of mind whatever your application. Whether it is chemical analysis or process control, our experts are on hand to help you select the right gas for your requirements. The range includes gas with unrivalled specifications of critical impurities and a comprehensive range of package options.

Benefits of Oxygen Ultra-Pure 5.0 & 5.5 Grade

For elemental analysis techniques the level of Nitrogen impurity in the reference and oxidant gases is usually critical because it is commonly the Nitrogen content of the sample which requires accurate detection and measurement. A high level of Nitrogen in these gases can severely affect the accuracy of the analyzer. Therefore, using Oxygen Ultra pure 5.0 & 5.5 Grade for this application which has < 1 part per million of this critical impurity can dramatically improve analyser sensitivity.

Featured Applications

• Aeration for Waste Water
• Annealing
• Artificial Insemination
• Balloon Inflation
• Beverage Dispense
• Blood and Cell Storage
• Brazing
• Campylobacter Intervention
• Cryogenic Chilling for Food
• Cutting
• Flame Ionization Detector(GC-FID)
• Food Freezing
• Gas Detection
• Hardening Crust Freezing
• Inductively Coupled Plasma ICP
• Laboratory Analysis
• Laser
• Pharmaceutical Gases and Cryogenic Storage
• Modified Atmosphere Packaging (MAP)
• pH Control for Swimming Pools
• Sintering
• Thermal Spray
• Welding

Upcoming plants Hydrogen Filling Plant

Hydrogen uhp grades manufacturing plant at SEZ Khed city Pune for quality of upto 6 N quality Hydrogen gas required in Diamond cutting Industries.